兩邊除以0.2
y+2=0.8÷0.2
y+2=4
y=4-2
y=2
0.2[y+2]=0.8解方程題帶過程
0.2[y+2]=0.8解方程題帶過程
數(shù)學(xué)人氣：648 ℃時(shí)間：2020-06-11 21:53:03
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